JP3163600U - Disposable tip used for lathe - Google Patents

Abstract

Provided is a lathe tip that can be used at both ends without any waste and is firmly fixed to a cutting tool. A chip is fixed to a cutting tool by a screw through a perforation provided in the chip corresponding to the position of a screw hole in a chip fitting groove of the cutting tool. Furthermore, by providing a fitting protrusion 21 having a symmetrical shape on the chip and providing a fitting groove 13 corresponding to the fitting protrusion 21 on the cutting tool, the chip fitted in the fitting groove can be stably fixed. Even when one end of the tip is worn or damaged and the tip is fixed in the opposite direction and the opposite end is used, the tip can be stably fixed. The shape of the fitting protrusion 21 and the fitting groove 13 may be symmetrical with respect to the fixing screw, and the shape is not limited as long as it is a concave portion and a convex portion that are fitted in correspondence with each other. [Selection] Figure 3

Description

  The present invention relates to a disposable tip used for a lathe, and more particularly, to a replacement tip used for a lathe for improving work efficiency, processing accuracy and quality.

  When a material is processed by a lathe, the processing is performed by a CNC lathe having a plurality of cutting tools on which different chips are arranged. By using a CNC lathe, an appropriate chip can be selected and used in different processing steps.

  Reference is made to FIGS. FIG. 1 is a side view showing a conventional cutting tool and chip. FIG. 2 is a cross-sectional view showing a conventional cutting tool and chip. As shown in FIGS. 1 and 2, a tip 1 having both ends of the blade is used. The chip 1 has a hole 2 in the center. The cutting tool 3 is provided with a semi-closed groove 4 in which the chip 1 is disposed on one side. The groove 4 is provided with a fitting groove wall 5 for fitting the end portion of the chip 1 on the closed side. Further, the cutting tool 3 is provided with a screw hole 6 at a predetermined location. When the chip 1 is disposed in the groove 4 of the cutting tool 3, the end portion of the chip 1 is fitted into the fitting groove wall 5 of the groove 4 and positioning is performed. Then, the screw 7 is screwed into the screw hole 6 of the groove 4 from the hole 2 of the chip 1 to complete the connection of the chip 1 and the cutting tool 3. When the usage period of the chip 1 exceeds a certain period and is consumed, it can be used again by removing the chip 1 and screwing the opposite end onto the cutting tool 3. Thereby, the replacement cost of the chip 1 can be reduced.

  The above-described screwing method of the chip 1 and the cutting tool 3 is such that the chip 1 is fixed and moved by combining the direct coupling with the screw and the fitting of the end portion of the chip 1 and the fitting groove wall 5 of the groove 4. There was no worry, and the machining process was performed smoothly. However, if the tip 1 is damaged or worn out after a certain period of time after use, the worn end is not a groove of the bit 3 even if the tip 1 is removed and the opposite end is screwed onto the bit 3. 4 cannot be securely fitted into the fitting groove wall 5, which adversely affects the stability of the coupling between the two.

Further, when the chip 1 is damaged, it cannot be fitted into the fitting groove wall 5 of the groove 4 of the cutting tool 3, so the damaged chip 1 must be discarded and replaced with a new chip 1. If it becomes so, the meaning which provided the blade edge | tip at the both ends of the chip | tip 1 will lose | eliminate, and the replacement cost will increase. If the structure of the conventional chip | tip 1 is seen, it will be understood that the chip | tip 1 is long and the screw hole 6 of the groove | channel 4 of the cutting tool 3 is near an edge part. Therefore, when the chip 1 is screwed to the cutting tool 3, the protruding portion of the chip 1 becomes long. When the cutting tool 3 is sandwiched between the machining axes of the lathe, the protruding portion of the chip 1 is long, so there is a possibility that it may adversely affect the material.

JP 2002-346808 A JP 63-251103 A

A first object of the present invention is to provide a disposable tip used for a lathe capable of fixing the tip firmly and proceeding smoothly.
The second object of the present invention is to provide a disposable tip used in a lathe that reduces the cost of tip replacement by using the cutting edges at both ends of the tip.
A third object of the present invention is to provide a disposable tip used in a lathe that reduces the number of adjustments when the tip and the cutting tool are mounted on the machining shaft and improves the working efficiency.
A fourth object of the present invention is to provide a disposable tip used in a lathe in which the tip and the cutting tool are mounted on a machining shaft and do not adversely affect the material.

In order to achieve the above object, the present invention provides a disposable tip for use in a lathe. The disposable tip used in the lathe of the present invention is provided with a fitting groove having an appropriate shape and depth at the position of the screw hole of the bite groove. The screw hole is provided at the center of the fitting groove, and the fitting protrusion is provided at a position facing the perforation of the surface on which the chip is arranged. The fitting protrusion has a form and depth corresponding to the fitting groove. Since the perforation of the chip passes through the center of the fitting protrusion, when the chip is fitted into the groove on the bite, the inner end of the chip is fitted with the fitting groove wall at the inner end of the groove and positioned. In addition to the action, the fitting protrusion of the chip is fitted into the fitting groove of the groove, thereby further providing a positioning action, which greatly enhances the coupling between the chip and the bite.

The disposable tip used in the lathe of the present invention has the following three advantages. (1) In addition to the fact that the inner end of the chip is fitted to the fitting groove wall of the inner end of the groove to cause a positioning action, the chip is further positioned by fitting the fitting protrusion of the chip into the fitting groove of the groove. Since the action occurs and the tip never moves, the machining operation can be performed smoothly and the machining accuracy can be improved. (2) Even if the tip is worn or damaged, the tip and the cutting tool are strongly bonded, so that the cutting edges at both ends of the tip can be fully utilized, extending the life of the tip, and realizing cost reduction by changing the tip. Can do. (3) After the tip and tool have been combined, the tip of the tip and the center point of the material need only be adjusted once by the addition of the polishing part. Time can be saved and work efficiency, processing accuracy and quality can be improved.

It is a side view which shows the conventional cutting tool and a chip | tip. It is sectional drawing which shows the conventional cutting tool and a chip | tip. It is a disassembled perspective view which shows the structure of the rhombus fitting groove | channel by the 1st Embodiment of this invention. It is a perspective view which shows the structure of the rhombus fitting groove | channel by the 1st Embodiment of this invention. It is sectional drawing which shows the structure of the rhombus fitting groove | channel by the 1st Embodiment of this invention. It is a side view which shows the combined state of the rhombus fitting groove | channel and chip | tip by the 1st Embodiment of this invention. It is a side view which shows the combined state of the hexagonal fitting groove | channel and chip | tip by the 1st Embodiment of this invention. It is a side view which shows the combined state of the elliptical fitting groove | channel and chip | tip by the 1st Embodiment of this invention. It is a side view which shows the combined state of the octagonal fitting groove | channel and chip | tip by the 1st Embodiment of this invention. It is a side view which shows the state before use of the chip | tip arrange | positioned at the rhombus fitting groove | channel by the 1st Embodiment of this invention. It is a side view which shows the state where the chip | tip arrange | positioned at the rhombus fitting groove | channel by 1st Embodiment of this invention is worn out or damaged after use. It is a side view which shows the state which changed the direction of the chip | tip after use of the chip | tip arrange | positioned at the rhombus fitting groove | channel by the 1st Embodiment of this invention. It is a disassembled perspective view which shows the structure of the fitting groove | channel by the 2nd Embodiment of this invention. It is a side view which shows the combined state of the fitting groove | channel and chip | tip by the 2nd Embodiment of this invention. It is a side view which shows the state before use of the chip | tip arrange | positioned at the fitting groove | channel by the 2nd Embodiment of this invention. It is a side view which shows the state which changed the direction of the chip | tip after use of the chip | tip arrange | positioned at the fitting groove | channel by the 2nd Embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings.

  Reference is made to FIGS. FIG. 3 is an exploded perspective view showing the structure of the diamond-shaped fitting groove according to the first embodiment of the present invention. FIG. 4 is a perspective view showing the structure of the diamond-shaped fitting groove according to the first embodiment of the present invention. FIG. 5 is a cross-sectional view showing the structure of the diamond-shaped fitting groove according to the first embodiment of the present invention. FIG. 6 is a side view showing a coupled state of the diamond-shaped fitting groove and the chip according to the first embodiment of the present invention. FIG. 7 is a side view showing a combined state of the hexagonal fitting groove and the chip according to the first embodiment of the present invention. FIG. 8 is a side view showing a coupling state between the elliptical fitting groove and the chip according to the first embodiment of the present invention. FIG. 9 is a side view showing a coupled state of the octagonal fitting groove and the chip according to the first embodiment of the present invention. As shown in FIGS. 3 to 9, the cutting tool 10 of the present invention is provided with a semi-closed groove 11 in which a chip 20 is arranged at one end. The groove 11 is provided with a fitting groove wall 12 for fitting the end portion of the chip 20 on the closed side. Further, a fitting groove 13 having an appropriate shape and depth is provided at a predetermined location of the groove 11. The fitting groove 13 is preferably a polygon having a symmetrical form, such as a rhombus, hexagon, ellipse, or octagon. A screw hole 14 is provided at the center of the fitting groove 13. The tip 20 is provided with cutting edges at both ends as in the prior art, and can be used with its orientation changed. A fitting protrusion 21 integrally formed with the chip 20 is provided at the center of the surface on which the chip 20 is disposed. The fitting protrusion 21 corresponds to the fitting groove 13 of the groove 11 having the form and depth of the cutting tool 10. The chip 20 is provided with a perforation 22 that penetrates the fitting protrusion 21.

  When the chip 20 is disposed on the cutting tool 10, the fitting protrusion 21 of the chip 20 is fitted so as to correspond to the fitting groove 13 of the groove 11 of the cutting tool 10. At this time, the cutting edge at the inner end of the tip 20 is fitted with the fitting groove wall 12 at the inner end of the groove 11 to cause a positioning action. At the same time, when the screw 30 is screwed from the hole 22 of the chip 20 into the screw hole 14 of the groove 11 with the hole 22 of the chip 20 corresponding to the screw hole 14 of the groove 11, the chip 20 and The combination of byte 10 is complete. As described above, the fitting protrusion 21 of the chip 20 is located in the fitting groove 13 of the groove 11 except that the inner end of the chip 20 is fitted to the fitting groove wall 12 of the inner end of the groove 11 to cause positioning. Further, a positioning action is produced by fitting to. Therefore, since the chip 20 never moves, the machining operation can be performed smoothly and the machining accuracy can be improved.

  Reference is made to FIGS. FIG. 10 is a side view showing a state before use of the chip disposed in the diamond-shaped fitting groove according to the first embodiment of the present invention. FIG. 11 is a side view showing a worn or damaged state of the chip disposed in the diamond-shaped fitting groove according to the first embodiment of the present invention. FIG. 12 is a side view showing a state in which the direction of the chip is changed after using the chip arranged in the diamond-shaped fitting groove according to the first embodiment of the present invention. As shown in FIGS. 10 to 12, when the chip 20 is worn or damaged after a certain period of use, the screw 30 is loosened to remove the chip 20 from the groove 11 of the cutting tool 10, and the direction of the chip 20 is reversed. 10 is re-fitted into the groove 11, and finally the screw 30 is screwed, the tip 20 can be used in a different direction. In this embodiment, since the fitting groove 13 of the groove 11 and the fitting protrusion 21 of the chip 20 are polygons having symmetrical shapes, the fitting protrusion 21 does not fit into the groove 11 even if the direction of the chip 20 is changed. Fits with the groove 13 and has a firm positioning effect. For this reason, the tip 20 is worn and the cutting edge cannot be securely fitted to the fitting groove wall 12 of the groove 11 or the tip 20 is damaged in some cases, and is fitted in contact with the fitting groove wall 12 of the groove 11. Even if they cannot be combined, the fitting protrusion 21 of the chip 20 is fitted to the fitting groove 13 of the groove 11 of the cutting tool 10 and positioning is performed, so that the connection between the chip 20 and the cutting tool 10 is stabilized and the machining operation is performed. Can proceed smoothly. Therefore, the cutting edges at both ends of the chip 20 can be fully utilized, the life of the chip 20 can be extended, and the cost can be reduced by replacing the chip 20.

  Reference is made to FIGS. FIG. 13 is an exploded perspective view showing the structure of the fitting groove according to the second embodiment of the present invention. FIG. 14 is a side view showing a coupling state between the fitting groove and the chip according to the second embodiment of the present invention. FIG. 15 is a side view showing a state before use of the chip disposed in the fitting groove according to the second embodiment of the present invention. FIG. 16 is a side view showing a state in which the direction of the chip is changed after the chip disposed in the fitting groove according to the second embodiment of the present invention is used. As shown in FIGS. 13 to 16, since the cutting tool 40 moves the screw hole 42 of the cutting tool 40 to which the chip 50 is screwed to a position away from the end portion, the cutting edge of the cutting tool 50 is shortened. Thereby, when the chip | tip 50 and the cutting tool 40 couple | bond together, the length of the blade edge | tip 51 of the chip | tip 50 can be shortened. A polishing portion 52 is provided in a portion of the chip 50 near the cutting edge 51. Since the highest part of the polishing part 52 is higher than the cutting edge 51, when the chip 50 is polished, an allowable range is widened and a margin is created. When the chip 50 is coupled to the cutting tool 40, the polishing portion 52 slightly exceeds the height of the cutting tool 40, but the relative relationship between the cutting edge 51 of the chip 50 and the cutting tool 40 is not affected.

  When the tip 50 is disposed in the groove 41 of the cutting tool 40 due to the structure of the short cutting edge and the arrangement of the polishing portion 52, the cutting tool 40 is short in addition to the screw hole 42 and the screw 43 being firmly coupled to the chip 50. Therefore, there is no fear that the cutting tool 40 and the chip 50 sandwiched by the lathe clamping tool and the material or the surrounding objects adversely affect each other. Further, by adding the polishing portion 52 of the chip 50, after the chip 50 and the cutting tool 40 are coupled, the cutting edge 51 of the chip 50 and the center point of the material need only be adjusted once and do not need to be adjusted many times. . Therefore, troublesome adjustment work and time can be omitted, and work efficiency, processing accuracy and quality can be improved.

  Although the present invention discloses preferred embodiments as described above, these are not intended to limit the present invention in any way, and anyone skilled in the art is within the spirit and scope of the present invention. Various changes and modifications can be made. Therefore, the scope of protection of the present invention is based on the contents specified in the claims of the utility model.

10 Bite 11 Groove 12 Fitting groove wall 13 Fitting groove 14 Screw hole 20 Tip 21 Fitting protrusion 22 Drilling 30 Screw 40 Byte 41 Groove 42 Screw hole 43 Screw 50 Tip 51 Cutting edge 52 Polishing part

Claims (11)

Protruding the tip of the chip to provide a groove for fitting and fixing the chip, and forming a hole provided in the center of the chip on the tool with a positioning function as a fitting groove wall having a shape corresponding to the shape of the tip of the chip at the opposite end of the groove In a tip that is fixed with screws and provided with cutting edges at both ends,
A point-symmetric fitting protrusion is provided at the center of the chip, the fixing hole is disposed at the center thereof, and is fitted into a fitting groove formed correspondingly in the groove of the cutting tool. Thus, a disposable tip used for a lathe characterized by having a tip positioning and fixing action.   The disposable used for a lathe according to claim 1, wherein the fitting groove of the groove of the cutting tool and the fitting protrusion of the chip are fitted to each other and have a symmetrical rhombus shape. Mold chip.   2. The lathe according to claim 1, wherein the fitting groove of the groove of the cutting tool and the fitting protrusion of the chip are fitted to each other and are symmetrical hexagons. Disposable tip.   2. The lathe according to claim 1, wherein the fitting groove of the groove of the cutting tool and the fitting protrusion of the chip are fitted to each other and are symmetrically elliptical in shape. Disposable tip.   2. The lathe according to claim 1, wherein the fitting groove of the groove of the cutting tool and the fitting protrusion of the chip are fitted to each other and are symmetrical octagons. Disposable tip. The disposable tip used in a lathe according to claim 1, wherein the fitting protrusion of the tip is integrally formed on a surface of the tip that is fixed to the cutting tool. The disposable tip used in a lathe according to claim 1, wherein a polishing portion is provided on a side surface of the tip closer to the blade edge, and the polishing portion is formed to protrude higher than the side surface of the tip. The disposable tip used in a lathe according to claim 1, wherein the tip has a structure with a short cutting edge. The disposable tip used in a lathe according to claim 1, wherein the screw hole is separated from an end of the cutting tool. The disposable tip used for a lathe according to claim 1, wherein the cutting edge of the tip has a short structure, and the screw hole is separated from an end of the cutting tool. 2. The disposable tip used in a lathe according to claim 1, wherein the polishing portion on the side surface of the tip is higher than the side surface of the cutting tool in a state where the tip is mounted on the cutting tool.

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